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Finding the Fourth Proportional to 671,416.80, 926,750.82 and 438,877.56

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Solution

The fourth proportional to 671,416.80, 926,750.82 and 438,877.56 is: 605,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,416.80 : 926,750.82 = 438,877.56 : x
  2. Step 2: Convert to fraction form
    671,416.80/926,750.82 = 438,877.56/x
  3. Step 3: Cross multiply
    671,416.80x = 926,750.82 × 438,877.56
  4. Step 4: Simplify right side
    671,416.80x = 406,730,138,609.60
  5. Step 5: Solve for x
    x = 406,730,138,609.60/671,416.80
  6. Step 6: Final answer
    x = 605,778.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.